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A158015 Primes p such that 6*p-1 is also prime. 10
2, 3, 5, 7, 17, 19, 23, 29, 43, 47, 53, 59, 67, 103, 107, 109, 113, 127, 137, 157, 163, 197, 199, 227, 229, 239, 269, 283, 313, 317, 347, 359, 373, 379, 383, 389, 397, 439, 443, 449, 457, 463, 467, 523, 569, 577, 593, 599, 613, 617, 647, 653, 709, 733, 743, 773 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Solutions of the equation (6*n-1)'+n'=2, where n' is the arithmetic derivative of n. - Paolo P. Lava, Oct 31 2012

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Flatten[Table[If[PrimeQ[n] && PrimeQ[6*n - 1], n, {}], {n, 1, 10000}]]

Select[Prime[Range[200]], PrimeQ[(6 # - 1)]&] (* Vincenzo Librandi, Apr 14 2013 *)

PROG

(MAGMA) [p: p in PrimesUpTo(800) | IsPrime(6*p-1)]; // Vincenzo Librandi, Apr 14 2013

CROSSREFS

Cf. A005382 for the type 2p-1, A062737 for 4p-1, A158016 for 8p-1, A158017 for 10p-1.

Primes in A024898, i.e., intersection of A024898 with A000040.

Sequence in context: A129692 A272441 A155471 * A042995 A108222 A090725

Adjacent sequences:  A158012 A158013 A158014 * A158016 A158017 A158018

KEYWORD

nonn,easy

AUTHOR

Roger L. Bagula, Mar 11 2009

EXTENSIONS

Edited by the Associate Editors of the OEIS, Apr 22 2009

STATUS

approved

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Last modified April 18 10:56 EDT 2021. Contains 343087 sequences. (Running on oeis4.)